Concrete-reinforce.



UNITED STATES PATENT OFFICE.-

ALFRED E. LI'NDIAU, or s'r. LOUIS, MISSOURI, AssIeNon TO COBRUGATED'BAR COM- PANY, or ST. LOUIS, MISSOURI, A CORPORATION or MISSOURI.

CONCRETE-REINFORCE.

Specification of Letters Patent.

Patented Nov. 5. 1912.

Application filed February 11, 1909. Serial No. 477,386.

Missouri, have invented a new and useful Improvement in Concrete:Reinforces of which the followlng 1s a specificatlon.

In the'construction of reinforced concrete beams'and like structures, it is the common practice to position the several bars or other reinforcing v members individually at the work; and with unskilful work-men and unfavorable conditions at the work, the actual positions of the reinforcing members are liable to vary from the positions they are designed to occupy. On the other hand, if the reinforcing members are assembled at the factory, in proper relation to each other. the are liable to be bent "or to be shifted wit. relation to each other before reaching the Work.

The principal objectof the present invention is to provide for-the assembling of the reinforcing members into a unitary frame which will minimize the risk of having 1ts membersdistorted or unintentionally shift- .ed in relationtoeach other during shipment.

Another object is tomake the c11ps or tance between the side members easily ad-- justablev The-invention consist-s principally in a collapsible and adjustableunit frame for relike symbols refer to like parts. wherever.

' 'inforcing concrete hereinafter described and '35 claimed. p

It also consists in pivotally mount ng the frame connecting or spacing llnks'm the distance pieces which serve to positionthe main reinforcing members at therespective sides of the frame, and also 111 the particular form of such positioning members; and

in the constructions and arrangements of parts hereinafter more fully appearing.

. In the accompanying drawing, which forms part of this specification and wherein they occur, Figure 1 is a side elevation (omitting some details) of a reinforcing frame embodying my invention; Figs. 2 and 3am similar, plan views showing the unit frame in its normal condition and in its collapsed condition, respectively; Fig. 4 is a detail view of a wire constituting a series of secondary reinforcing loops, and

also illustrating a fastening clip in perspective; Fig. 5 isia cross section of a reinforce or unitframe comprising two side frames. linked together: Fig. 6 is a perspective detail view of a clip or spacing member adapted to.coiiperate with square bars; Fig. (3 illustrates a modified form of'clip or spacging member: Fig. .7 is a plan view of a part of a c'ollapsibm reinforce or unit frame consisting of three parallel members linked together; Fig. 8 is a detail elevation of the portion indicated. by line 8 -S of Fig. 7; Fig; 9 is a vertical sectional view on the line 99 of Fig. 7, with the secondary reinforce omitted: Fig. .0 is a perspective detail view of a member adapted to pivotally connect the links to an intermediate bar or frame of a collapsible unit: Fig. 11 is a detail View illustratinga clip or spacing member co-' operating with round bars having transverse ribs. Fig. .12 is a perspective view of the spacing member illustrated in Fig. 11. In the construction illustrated in Figs. 1, 2 and 3, the main reinforcing members are framed together in two groups each of which constitutes a side of a collapsible unit frame. In this construction, the primaryIi'reinforcing members of each side coniprise a'straight horizontal bar '1 at the bottom and a second bar. 9 located above it, both of which are preferably corrugated or provided with transverse ribs 3. The middle portion of the second bar parallel with. the first mentioned, bar and, at each end of said middle portion, said second bar inclines upwardly andthence extends horizontally to each end, in conformity with common practice. The two bars thus constituting the primary reinforcing members of a side of the unit frame are firmly" held together by suitableclips or spacing members 4, preferably of the kind hereinafter more fully described.

-T-he respective side frames constituting the primary reinforce support groups of secondary reinforcing members, whose principal function is to take care of the shearing stresses and diagonal tension stresses in the beam. In the construction illustrated, all of the secondary reinforcing members of a group are made of a continuous wire 5. This wire is fastened near one end of the lower bar of a side frame of the primary. reinforce and thence extends vertically upward and over the outer end of the corresponding upper bar and thence downwardly at an inclination to and around the lower bar and thence up again and over the'upper b'arand down at an inclination to thelower of the wire reach to the same height-{the ou ermost loops being in contact at their tops'with the upper reinforcing bar, While the-remaining loops extend above the por- -tions of the bar inclosed-by them respectively. The Wire thus constituting a group of secondary reinforcing members-is secured by any suitable fastenersfi to the main reinforcing bars and is preferably of a kind that hesconsiderahle rigidity: A suitable fastener or. clip', consists of a blank of pliable 5 metalof 2. Width less than the thickness of the bar and provided with elongated lateral projections 7 at diagonally opposite corners;

These projectionshare' of such length that p when the body portion liesflatwise against one side of a bar and the projections are bent, they Will reach aroundtovthe opposite side. 'A. transverse groove in the body portion receives the-Wire, "which is thus firmly clipped to the bar. .Animportant advane tagepfthis construction is'that the number,

spacmgfand inclination of the loops may "be varied astdesired, and that the continuous Wire .and the main. reinforcing bars cooperate in stiffening the side frames and thus mutually protect each other in transit.

The side :frames or members of the complete 'unit :frame 'are connected together by links 8 of any-suitable type that ,Will permit such- 'side.men1bers to come together. As illustfated in the accompanying" drawing, the distance pieces or spaoin 'cli'ps 4 which hold together-the main reinlorcing barscf a side frame or member' are formed with 'eyes or vertical openings 7 9' therethrough. 40 These qeyes ccnstitutesocketsfor pi'ntles formed on the links,-whereby the links are pivotally connected at each endto the side me'mbers of-the complete unitfr'ame. In the construction illustrated, each link" is 5 made of acontinuous strip or stifl Wire bent into theform of'a.-rectangle' with the ends of the'wire meeting-at the middle of a short side of'said-rectangle.- The middle portion of said Wire constituting one short side of 5o'the rectangle lies in the opening of'o'ne'distance piece/"and the two'end portions lie in the openingi'n the distance piece on the opposite side frame .133 this construction,

' v the-link ofters'little or no obstruction to the tier; of the concrete, andits'bearing is the full width-of. the spacing'clip' or distance piece; A suitabledistance piece for square I bars is "illustratedin Figf 6:" This dist nee" I piece is mad'e 'out of ablank or shee'g of.

pliable metal. This'blank comprises a id: dle; section Whose lengt-li is something more than 'the' distance betwee'n'the' bars'to be spaced and Whos'e'ividth is siifiicien t'to bebent intoan eye/for the lihk'.' 'At"each side of this middle portion is a notch '10 of proper dnnensions to receive the bar with which the blank is designed to cooperate. bar'and so on: Preferably,'the severabloqas At the outer-side of each notch, the -blanl an elongated lateral projection ll, which extends a distance reater than the thickness. of the bar with which it is designed to cooperate. The blank is first doubled back to form the eye. Then the bars are positioned in the notches provided therefor :1 nd then the projecting marginal portionsof the blank are bent over at righttangles to the plane of the body portion and then the. projecting portions 11 are bent down around -.the outside oi the bar. In practice, the form of the notches is made to conform toi'he contour of the bar; That isto say, in, the case of a square bar, the notches are rectangular, as illustrated in Fig. 6;"and-in the case of around bar, the notches are cone-.1 v-e,

as illustrated in Fig. 12. v

-When bars having tl'fLllSVGlSflllbS are *used, it is. desirable to proportion the nn'irginal orcorner projections of the blank so that when the blank'is shaped up, there will;

be a slight space 12 between adjacent corner proj ections, whereby the transverse ribs may rest between and be interlocked by such corner portions, as illustrated in Fig. 7'. f 1 Fig; 6 illustrates a modified form wherein the eye formed'at one edge of the 9 l. blank; in this form the elongated pro ectlons are slotted lengthwise so as to adapt them to straddle transverse ribs on the rc- I inforcing b'ars. With either forni, the bars are pretented from slipping endwise i'vith respectto each other.

, It is noted that by reason of the parall'el frames being'pivotally linked together, the j construction may be collapsed for shipment, in which condition it is less bulky and less liableto injury. So, too, it is noted that if the'ce'ntering should be accidentally'made narrower than designed, the pivota'lly mounted links Will permit the space between the sideiframes to be decreased without affecting the pagallel relation of said frames. While the foregoing description relates to a unit frame having two sidemembers, it is obvious" that the invention may been]- bodied in a unit frame having any number of parallel frames or members, as; illustrated in Figs; 7 and 9, for instance. So, toonit is obvious that is not necessary the t the parallel frames or members should be counterparts oi each other. For instance, the middle member ot the collapsible n' nit ofFigl 9 is a si 'iglebar, and likewise the side members might be single bars or more than two bars vwithout departing rrom my invention. In such case, the parts hereinbefore' designated as distance pieces or spacing'lclips serve. merely to mount the links pivotally on th'e bars.

. arr claim lsi l. A spacing clip for a concrete reinforce comprising substantially parallel reintorcing bars, said spacing clips comprising a flanged blank having end notches adapted to receive reinforcii'ig bars and having the flange terminating in portions adapted to be bent around the outer portions of said bars, respectively.

2. In a concrete reinforce comprising parallel reinforcing bars having transverse pro- JGCtlOIlS thereon, a spacing clip mounted on and adapted to hold said reinforcing bars in proper relation to each other. said spacing clip comprising a blank having notches in its ends adapted to receive said bars and having marginal extensions adjacent said notches adapted to be bent around said bars between said projections.

3. In a concrete reinforce con'lprising rcinforcing bars arranged in a vertical plane and having transverse ribs thereon. a spacing clip adapted to hold said bars in proper relation to each other. said spacing'clip comprising a blank having notches adapted to receive said bars and having portions adapted to be bent around the bar on opp'o-- site sides of a transverse rib. V

4. In a concrete reinforce comprising rcinforcing bars arranged in a vertical plane and having transverse ribs thereon, a spacing clip adapted to hold said bars in proper relation to each other. said spacing clip comprising a blank having notches adapted to receive said bars an'd marginal flanges whiiih have narrower extensions adapted to be bent around the bar on opposite sides of a transverse rib.

5. In a concrete reinforce comprising a plurality of frames each consisting of reinforcing bars, spacing devices adapted to hold said bars and frames inproper relation to each other, said-spacing devices comprising spacing clips, each clip comprising a blank having notches adapted to receive said bars and having marginal portions adapted to be bent around said bars. and a plurality of links each pivotally mounted on the spacing clips of the respective frames.

6. A spacing device for a concrete reinforce comprising a plurality of frames each consisting of reinforcing bars, said spacing device comprising a plurality of spacing clips each adapted to hold the bars of respective frames in proper relation to each other, said spacing device comprising a plurality of clips'cach comprising doubled blank having an eye and having notches .in its edges adapted to receive reinforcing bars and marginal extensions adapted to be bent around said bars, and a plurality of links of rectangular shape mounted in the yes of the spacing clips of the respective fraiaes.

7. In a concrete reinforce comprisinga plurality of frames each consisting of reinforcing bars, spacing clips adapted to hold said bars in proper relation to each other,

s;!l(t clips each comprising a doubled blank having an eve in its middle portion and having notches in it edges adapted to receive said bars and n rgiual extensions adapted to be bent arouifd said bars. and a plurality of wire links of rectangular shape mounted in the eves of the spacing clips of the respec- Live frames.

8. spacing clip for parallel reinforcing bars. said clip comprising a, doubled sheet metal blank having notched ends adapted to receive reinforcing bars. and extensions adjacentsaid notches adapted to be bent around bars positioned in the respective. notches.

J. A spacing clip for parallel reinforcing bars, said clip comprising a sheet metal body portion having anotch a djacent cltlltl end. said notch being shaped to provide a sea for a reinforcing bar. and extensions adjacent said notches adapted to be bentaround bars positioned in the respective notches.

'10. A (.'onc1'cte reinforce comprising members located in parallel frames. the members of said parallel frames being held in proper relation to each other by spacing members. and parallel links oollapsilily connecting said frames together, said links comprising portions which are pivoted to said spacing members.

11. A concrete reinforce comprising upper and lower members assembled in parallel vertical frames. a rigid link for collapsibl v connecting said frames together at top and bottom. and means pivotall connecting said link with said upper and lower members. the members of said frames being arranged to take care of the tension stresses in the concrete structure.

12. A concrete reinforce comprising reinforcing bars, a. plurality of means for securing said bars in vertical frames. and rigid parallel links each pivotally connecting said frames together at both the tops and the bottoms thereof. the'bars of said frames being" arranged to take care of the tension stresses in the concrete structure.

13. A concrete reinforce comprising parallel vertical frames and rectangular \vire links pivot-all connecting them together.

each frame comprising reinforcing bars and,-

spacing clips adapted to hold them in proper relation to each other, and said rectangular links being pivotally mounted on said spacing clips.

14. A collapsible reinforcing unit frame comprising reinforcing members in parallel planes, clips secured to and spacing apart reinforcing members lying in the same plane. and spacing links pivot-ally secured to said reinforcing members by means of saidgclips and collapsibly maintaining the respective members of said frame in parallel relation. v

15. A concrete reinforce comprising reinforcing l'm-a's arrange/("l in parallel vertical 1 Frames, clips fixedly secured upon and. rigname to this specification in the presence iilly connecting the upper and lower bars of two subscribing Witnesses this llth' day 10 said frames respeetive1y,'and rigid parallel February, 1909, at Vashington, D. C.

links pivoted to raid clips at. separated ALFRED E. LINDAUQ points in vertical irlinementythe bars of said i frames being arranged to take care of the tension stresses in the concrete structure.

In testimony whereof I have sign mlinx Witnesses:

EDWIN S. CLARKsoN, C. B. MELTON'. 

